const aaa = wx.publisher('aaa');
aaa.add(function(event) {
    console.log('sub1', event);
}, function(event) {
    console.log('sub2', event);
}, function(event) {
    console.log('sub3', event);
}, function(event) {
    console.log('sub4', event);
}, function(event) {
    console.log('sub5', event);
});
aaa.send({
    user: '123'
});